looking for mitchell of louisiana

My grandmother was Vivian Mitchell married Charles Lee Gray. Lived in Longville, La. Vivian died in 1992.
They had 2 children Charles Lee Gray Jr and Doloures Gray. Charles Lee Gray Jr married Dorothy Marie Lucius, they had 3 children Charles Lee Gray, III, Charlotte Anne Gray, Deborah Darlene Gray,and lived in Beaumont, TX and Lake Charles and Westlake, LA., and Doloures Gray married John Kelley, they had two children that i know of, Kaye Kelley and John Clifford Kelley and lived in Beaumont, TX. I know very little else other than my father Charles Lee Gray JR was born n Zwolle, LA I believe. and is now married to Sally West and lives in DeQuincy,LA. looking for any information to trace heritage and link with family members.